diff --git a/4chan_x.user.js b/4chan_x.user.js
index a18356ebc..0c5b53ccd 100644
--- a/4chan_x.user.js
+++ b/4chan_x.user.js
@@ -3339,7 +3339,7 @@
       var src, thumb;
       if (root.hidden || !(thumb = $('img[md5]', root))) return;
       src = thumb.parentNode.href;
-      if (/gif$/.test(src && !/^Spoiler/.test(thumb.alt))) return thumb.src = src;
+      if (/gif$/.test(src) && !/^Spoiler/.test(thumb.alt)) return thumb.src = src;
     }
   };
 
diff --git a/script.coffee b/script.coffee
index ab52e16b6..73f176090 100644
--- a/script.coffee
+++ b/script.coffee
@@ -2630,7 +2630,7 @@ imgGif =
   node: (root) ->
     return if root.hidden or !thumb = $ 'img[md5]', root
     src = thumb.parentNode.href
-    if /gif$/.test src and !/^Spoiler/.test thumb.alt
+    if /gif$/.test(src) and !/^Spoiler/.test thumb.alt
       thumb.src = src
 
 imgExpand =